Results 31 to 40 of about 312,373 (317)

Sharp bounds for a ratio of the q-gamma function in terms of the q-digamma function

open access: yesJournal of Inequalities and Applications, 2021
In the present paper, we introduce sharp upper and lower bounds to the ratio of two q-gamma functions Γ q ( x + 1 ) / Γ q ( x + s ) ${\Gamma }_{q}(x+1)/{\Gamma }_{q}(x+s)$ for all real number s and 0 < q ≠ 1 $0< q\neq1$ in terms of the q-digamma function.
Faris Alzahrani   +2 more
doaj   +1 more source

Robust chaos generation by a perceptron

open access: yes, 2000
The properties of time series generated by a perceptron with monotonic and non-monotonic transfer function, where the next input vector is determined from past output values, are examined.
Kanter, I., Priel, A.
core   +3 more sources

Some completely monotonic functions involving the polygamma functions

open access: yesJournal of Inequalities and Applications, 2019
Motivated by existing results, we present some completely monotonic functions involving the polygamma functions.
Peng Gao
doaj   +1 more source

n-Monotone exact functionals

open access: yesJournal of Mathematical Analysis and Applications, 2008
We study n-monotone functionals, which constitute a generalisation of n-monotone set functions. We investigate their relation to the concepts of exactness and natural extension, which generalise the notions of coherence and natural extension in the behavioural theory of imprecise probabilities. We improve upon a number of results in the literature, and
de Cooman, Gert   +2 more
openaire   +4 more sources

On testing exponentiality under Type-I censoring

open access: yesFrontiers in Applied Mathematics and Statistics, 2023
Two new goodness-of-fit testing procedures are introduced to test exponentiality when data are subject to Type-I censoring. We proposed four test statistics for this purpose.
Reza Pakyari, Omama M. Al-Hamed
doaj   +1 more source

On the inevitability of the consistency operator

open access: yes, 2019
We examine recursive monotonic functions on the Lindenbaum algebra of $\mathsf{EA}$. We prove that no such function sends every consistent $\varphi$ to a sentence with deductive strength strictly between $\varphi$ and $(\varphi\wedge\mathsf{Con}(\varphi))
Montalbán, Antonio, Walsh, James
core   +1 more source

On rational bounds for the gamma function

open access: yesJournal of Inequalities and Applications, 2017
In the article, we prove that the double inequality x 2 + p 0 x + p 0 < Γ ( x + 1 ) < x 2 + 9 / 5 x + 9 / 5 $$ \frac{x^{2}+p_{0}}{x+p_{0}}< \Gamma(x+1)< \frac{x^{2}+9/5}{x+9/5} $$ holds for all x ∈ ( 0 , 1 ) $x\in(0, 1)$ , we present the best possible ...
Zhen-Hang Yang   +3 more
doaj   +1 more source

Two Approximation Formulas for Bateman’s G-Function with Bounded Monotonic Errors

open access: yesMathematics, 2022
Two new approximation formulas for Bateman’s G-function are presented with strictly monotonic error functions and we deduced their sharp bounds. We also studied the completely monotonic (CM) degrees of two functions involving G(r), deducing two of its ...
Mansour Mahmoud, Hanan Almuashi
doaj   +1 more source

RG flows, cycles, and c-theorem folklore

open access: yes, 2011
Monotonic renormalization group flows of the "c" and "a" functions are often cited as reasons why cyclic or chaotic coupling trajectories cannot occur. It is argued here, based on simple examples, that this is not necessarily true. Simultaneous monotonic
A. B Zamolodchikov   +3 more
core   +1 more source

On the Laplace transform of absolutely monotonic functions

open access: yes, 2016
We obtain necessary and sufficient conditions on a function in order that it be the Laplace transform of an absolutely monotonic function.
Koumandos, Stamatis, Pedersen, Henrik L.
core   +1 more source

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